Oil-saving tilting-pad thrust bearing
By setting oil blocks and oil barrier plates in tiltable thrust bearings, hot oil and cold oil are prevented from mixing, and the oil flow path is optimized, which solves the problem of excessive use of lubricating oil under high-speed and light load conditions, and achieves the stability of Improved oil and cooling effects reduce operating costs and bearing temperature.
Patent Information
- Application Number
- CN202421361204.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-14
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-06-14
AI Technical Summary
Under high-speed and light load conditions, the lubricant oil used for tilt thrust bearings is too large, resulting in increased equipment operating costs and difficult to control the bearing temperature.
Design an oil-saving type tilt thrust bearing, which prevents hot and cold oil from mixing by setting up oil blocks and oil blocking plates, optimizes the oil flow path, and forms through oil inlet and oil-through slots on the oil blocks Cool the oil flow path, reduce oil volume and improve cooling efficiency.
It achieves the reduction of oil required for bearing operation, reduces equipment operation costs, improves the heat dissipation performance and service life of bearings, and reduces the overall weight of bearings.
Smart Images
Figure CN222296726U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bearings, and more specifically, to an oil-saving tilting pad thrust bearing. Background Art
[0002] In the field of high-speed rotating industrial equipment, tilting pad thrust bearings are highly favored due to their unique design and excellent performance. The uniqueness of this bearing lies in its pad design, which can tilt around a specific fulcrum, making it easier to form a small wedge-shaped gap during operation. The formation of this gap provides the bearing with greater flexibility and adaptability, enabling it to adapt to a wider range of working conditions, including high-speed rotating mechanical equipment such as centrifugal compressors, expanders, steam turbines and water pumps.
[0003] Because the pads can tilt around the fulcrum to adapt to the working conditions, more lubricating oil can enter the wedge-shaped gap between the friction pads, thereby taking away more heat and forming a thicker dynamic oil film. Under the same size, the tilting pad thrust bearing has a higher load-bearing capacity than the fixed thrust pad.
[0004] For high speed and light load conditions, such as Figure 1 and Figure 2 As shown, on the one hand, due to the large number of pads in our conventional tilting pad thrust bearings, under the same size, the more pads there are, the greater the power consumption. The greater the bearing power consumption means the higher the bearing temperature under the premise of the same oil supply. On the other hand, the lubricating oil entering the friction pair between the thrust bearing and the thrust plate takes away the heat generated by friction and then flows out from the outer side of the thrust pad and the oil outlet edge. The hot oil flowing out from the oil outlet edge will mix with the cold oil provided by the lubrication system between the two thrust pads and then enter the next thrust pad, thereby increasing the oil inlet temperature of the tilting pad thrust bearing in disguise. In order to ensure the safe operation of the bearing and reduce the bearing temperature, more lubricating oil must be supplied to the bearing.
[0005] In the application of tilting pad thrust bearings, especially under high-speed and light-load conditions, how to effectively reduce the amount of oil required for bearing operation has become the focus of major host manufacturers, because too much oil will increase the lubrication system and thus increase the operating cost of the equipment. Utility Model Content
[0006] The main purpose of the utility model is to provide a tilting pad thrust bearing which can reduce the number of pads and ensure the oil inlet temperature, thereby achieving oil saving.
[0007] In order to solve the above technical problems, the utility model proposes an oil-saving tilting pad thrust bearing, which includes:
[0008] A bearing seat having a mounting groove thereon;
[0009] A lower balancing block, comprising a plurality of blocks, and arranged in the mounting groove along a circumferential direction;
[0010] An upper balancing block, which has a plurality of blocks and is overlapped between two adjacent lower balancing blocks along a circumferential direction;
[0011] A plurality of thrust pads are provided on the upper balancing block;
[0012] and an oil baffle block, which has a plurality of blocks and is arranged between two adjacent thrust pads;
[0013] The bearing seat is provided with an oil slot hole, the oil baffle block is provided with an oil inlet slot hole connected with the oil slot hole; the oil baffle block is also provided with an oil baffle plate.
[0014] In the above technical solution, further, the oil baffle plate extends from the inner side of the preceding thrust pad on the oil baffle block toward the outer side of the succeeding thrust pad.
[0015] In any of the above technical solutions, further, the oil baffle plate and the oil baffle block are an integrated structure, and the oil baffle block is fixed to the port of the mounting groove of the bearing seat by screws.
[0016] In any of the above technical solutions, further, the oil baffle plate and the oil baffle block are an integrated structure, and the oil baffle block is fixed to the port of the mounting groove of the bearing seat by screws.
[0017] In any of the above technical solutions, further, a strip-shaped limit groove is provided on the outer wall of the upper balance block, and a limit screw extending into the strip-shaped limit groove is also provided on the outer wall of the bearing seat, and the limit screw is used to limit the upper balance block in the circumferential direction.
[0018] Beneficial effect: Compared with the prior art, by setting an oil baffle block and then setting an oil baffle plate on the oil baffle plate, the oil baffle plate is used to prevent the hot oil from combining with the cold oil. This design not only reduces the overall weight of the bearing, but also optimizes the oil flow path, thereby achieving the effect of saving oil. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0020] Figure 1 It is a structural schematic diagram of the prior art;
[0021] Figure 2 It is a structural schematic diagram of the prior art;
[0022] Figure 3 It is a three-dimensional structural schematic diagram of the utility model;
[0023] Figure 4 It is a three-dimensional structural schematic diagram of the utility model from another viewing angle;
[0024] Figure 5 It is a schematic diagram of the explosion structure of the utility model;
[0025] Figure 6 It is a schematic diagram of the top view structure of the utility model;
[0026] Figure 7 It is the flow path of cooling oil throughout the bearing;
[0027] Figure 8 It is the flow path of the cooling oil on the bearing seat.
[0028] The following are the descriptions of the reference numerals:
[0029] 100, bearing seat; 101, mounting groove; 102, oil trough hole; 110, limit screw; 200, lower balancing block; 210, step pin; 300, upper balancing block; 301, strip limit groove; 400, thrust pad; 500, oil baffle block; 501, oil inlet trough hole; 502, cold oil area; 503, hot oil area; 510, oil baffle plate; 520, screw. DETAILED DESCRIPTION
[0030] Below, the example embodiments according to the present application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application, and it should be understood that the present application is not limited to the example embodiments described herein. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0031] It should be noted that, as shown in this application and claims, unless the context clearly indicates an exception, the words "a", "an", "a kind" and / or "the" do not specifically refer to the singular, but may also include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of clearly identified steps and elements, and these steps and elements do not constitute an exclusive list, and the method or device may also include other steps or elements.
[0032] If the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.
[0033] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0034] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.
[0035] The present application proposes an oil-saving tilting pad thrust bearing, which aims to improve the oil-saving performance of the bearing while optimizing the flow and cooling effects of the oil.
[0036] The oil-saving tilting pad thrust bearing of the present application is described in detail through the following embodiments.
[0037] Embodiment 1:
[0038] like Figure 3-Figure 8 As shown, in this embodiment, an oil-saving tilting pad thrust bearing, including:
[0039] The bearing seat 100, as the foundation of the entire system, is designed to be cylindrical, and one end of the bearing seat 100 is provided with a mounting groove 101 for mounting and fixing other components;
[0040] The lower balancing block 200, as a supporting structure, has multiple blocks, which are evenly distributed in the mounting groove 101 along the circumferential direction and are firmly assembled by the step pin 210; the upper balancing block 300, the upper balancing block 300 is matched with the lower balancing block 200, the number of the upper balancing blocks 300 is the same as that of the lower balancing blocks 200, and is overlapped between two adjacent lower balancing blocks 200 along the circumferential direction to form a stable supporting layer;
[0041] The thrust pad 400 has multiple pieces, and all are arranged on the upper balancing block 300. The outer wall of the upper balancing block 300 is provided with a strip-shaped limiting groove 301. The outer wall of the bearing seat 100 is also provided with a limiting screw 110 extending into the strip-shaped limiting groove 301. The limiting screw 110 is used to limit the upper balancing block 300 in the circumferential direction.
[0042] And the oil baffle block 500 has multiple pieces and is arranged between two adjacent thrust pads 400; wherein, the bearing seat 100 is provided with an oil groove hole 102, and the oil baffle block 500 is provided with an oil inlet groove hole 501 connected with the oil groove hole 102; the oil baffle plate 510 is also arranged on the oil baffle block 500.
[0043] Different from the conventional thrust pad 400, the conventional thrust pad 400 is larger in volume than the upper balance block 300. The oil flow is as follows: Figure 1-Figure 2 As shown, in order to solve the problem that such bearings are not oil-efficient, the present application improves the thrust pad 400 by setting its area smaller than the upper balance block 300, and then sets an oil baffle 500 between two adjacent thrust pads 400, and uses an oil baffle plate 510 set on the oil baffle 500 to prevent the hot oil from combining with the cold oil. Such a design not only reduces the overall weight of the bearing, but also optimizes the flow path of the oil.
[0044] Specifically, oil baffles 500 are provided between adjacent thrust pads 400. These oil baffles 500 not only play the role of separating the thrust pads 400, but more importantly, the oil inlet slots 501 opened on them are connected with the oil slots 102 on the bearing seat 100, forming a circulation path for the cooling oil. It is worth mentioning that an oil baffle plate 510 is also provided on the oil baffle block 500, and this design plays a key role in improving the fuel saving performance.
[0045] The cooling oil first enters through the oil slot 102 of the bearing seat 100, and then flows to the oil inlet slot 501 in the oil retaining block 500. The oil flowing out of the oil inlet slot 501 is located on the end face of the oil retaining block 500. At this time, the design of the oil retaining block 500 divides the end face into a cold oil area 502 and a hot oil area 503. The oil inlet slot 501 is located exactly in the cold oil area 502, and the cold oil flows to the end face of the adjacent thrust pad 400 to absorb heat, so as to cool the entire bearing.
[0046] As the oil absorbs heat on the thrust pad 400, its temperature gradually increases and flows to the hot oil area 503 on the next oil baffle 500. Due to the presence of the oil baffle 510, the hot oil in the hot oil area 503 is effectively blocked and cannot be mixed with the cold oil in the cold oil area 502, thereby avoiding the mixing of hot and cold oils. This design not only ensures that the thrust pad 400 can always be effectively cooled, but also greatly improves the utilization efficiency of the oil.
[0047] In addition, because the oil in the hot oil area 503 is thrown out of the end surface (thrust surface) of the thrust pad 400 under the action of centrifugal force, the circulation and cooling effect of the oil are further promoted. This design not only improves the heat dissipation performance of the bearing, but also extends the service life of the bearing.
[0048] It should be noted that the rotation is counterclockwise in the figure, so the thrust pad 400 on the right side of the oil baffle block 500 is the next thrust pad 400 mentioned above, and the oil baffle block 500 on the right side of the next thrust pad is the next oil baffle block 500 mentioned above).
[0049] It should be noted that, in order to effectively avoid mixing of the oil in the cold oil zone 502 and the hot oil zone 503 , the oil baffle plate 510 is arranged to extend from the inner side of the preceding thrust pad 400 on the oil baffle block 500 to the outer side of the succeeding thrust pad 400 .
[0050] In general, this oil-saving tilting pad thrust bearing achieves better oil-saving performance and cooling effect by optimizing the design of the thrust pad 400 and the oil retaining block 500. In practical applications, it can not only improve the reliability and durability of the bearing, but also reduce the operating cost.
[0051] In this embodiment, the oil baffle plate 510 and the oil baffle block 500 are optimized as an integrated structure, and the oil baffle block 500 is fixed to the port of the mounting groove 101 of the bearing seat 100 by screws 520. By setting the oil baffle plate 510 and the oil baffle block 500 as an integrated structure, processing and assembly are facilitated.
[0052] The embodiments of the present disclosure have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.
Claims
1. An oil-saving tilting pad thrust bearing, characterized in that: include: A bearing seat (100) having a mounting groove (101); A lower balancing block (200) having a plurality of blocks and arranged in the installation groove (101) along a circumferential direction; An upper balancing block (300) comprises a plurality of blocks and is overlapped between two adjacent lower balancing blocks (200) along a circumferential direction; A thrust pad (400), which comprises a plurality of pads and is all arranged on the upper balancing block (300); and an oil baffle block (500), which comprises a plurality of blocks and is arranged between two adjacent thrust pads (400); The bearing seat (100) is provided with an oil slot hole (102), the oil baffle block (500) is provided with an oil inlet slot hole (501) connected to the oil slot hole (102); and the oil baffle block (500) is also provided with an oil baffle plate (510).
2. The oil-saving tilting pad thrust bearing according to claim 1, characterized in that: The oil baffle plate (510) extends from the inner side of the preceding thrust pad (400) on the oil baffle block (500) toward the outer side of the succeeding thrust pad (400).
3. The oil-saving tilting pad thrust bearing according to claim 1, characterized in that: The oil baffle plate (510) and the oil baffle block (500) are an integrated structure, and the oil baffle block (500) is fixed to the end of the mounting groove (101) of the bearing seat (100) by means of screws (520).
4. The oil-saving tilting pad thrust bearing according to claim 1, characterized in that: The thrust pads (400) are in three pieces, and the oil retaining blocks (500) are also in three pieces.
5. An oil-saving tilting pad thrust bearing according to any one of claims 1 to 4, characterized in that: A strip-shaped limiting groove (301) is provided on the outer wall of the upper balancing block (300), and a limiting screw (110) extending into the strip-shaped limiting groove (301) is also provided on the outer wall of the bearing seat (100), wherein the limiting screw (110) is used to limit the upper balancing block (300) in the circumferential direction.